TwinTurbo.NET: Nissan 300ZX forum - Re: Speedometer suddenly stopped working
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Subject Re: Speedometer suddenly stopped working
     
Posted by SammybTT(TN) on April 19, 2017 at 12:03 PM
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In Reply To Speedometer suddenly stopped working posted by aquariuscsm on April 16, 2017 at 07:36 PM
     
Message There are a couple of contributors to why your speedo isn't working: wiring, sensor, and speedometer.

I would start my investigation by driving the car and monitor the trip meter/odometer. It this is working properly it is probably your speedometer gauge.

To inspect speed sensor and wiring you will have to get underneath the car to insure the sensor and wiring is intact.

You can remove the sensor and turn it manually while monitoring the output with an analog meter. There are write up's located in this forum that explains the details (if required)

Lastly is the speedometer which is know to have faulty capacitors and cold solder joints. Gary (DVDBURN) did and excellent write up regarding the required repair procedure. For the unwilling you can ship your speedometer to Gary and he will repair for a reasonable fee.

Good luck and let us know what you find

     
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